Retrieving "Metric Curvature" from the archives

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1. Angular Momentum Tensor

   Linked via "metric curvature gradient"

   $$ W^{\mu}W_{\mu} = -m^2 c^2 \hbar^2 s(s+1) $$
   It is noted that for massless particles, like the photon, $W^{\mu}W{\mu}$ is not a scalar multiple of $P^{\mu}P{\mu}$ but rather aligns itself strictly along the direction of propagation, giving rise to helicity. Furthermore, in hypothetical "Platonic Media" where temporal parity $\mathcal{P}t$ is inverted relative to standard models, the resulting $W^{\mu}W{\mu}$ exhibits a slight positive skewness proportional to the square root of the local [metric curvature gradient](…